Boolean40. The coordinates of two different chessboard fields x1, y1, x2, y2 (integers, lying in the range 1-8) are given. Check the truth of the statement: "A horse can go from one field to another in one move".

Solution in Python 3:

import random

x1,y1,x2,y2 = [random.randrange(1, 9) for i in range(0,4)]
#x1,y1,x2,y2 = [2,2,2,1]

c = ((abs(x1-x2) == 1 and abs(y1-y2) == 2) \
     or (abs(y1-y2) == 1 and abs(x1-x2) == 2))

print("The 1st field:")
print("x1: ", x1)
print("y1: ", y1)
print()
print("The 2nd field:")
print("x2: ", x2)
print("y2: ", y2)
print()

print("Knight can move in one turn \
from one field to another: ",(c))